Finding the Fourth Proportional to 421,997.11, 582,356.99 and 231,022.80
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Solution
The fourth proportional to 421,997.11, 582,356.99 and 231,022.80 is: 318,812.00
Step by Step Solution
- Step 1: Write the proportion equation
421,997.11 : 582,356.99 = 231,022.80 : x - Step 2: Convert to fraction form
421,997.11/582,356.99 = 231,022.80/x - Step 3: Cross multiply
421,997.11x = 582,356.99 × 231,022.80 - Step 4: Simplify right side
421,997.11x = 134,537,743,006.93 - Step 5: Solve for x
x = 134,537,743,006.93/421,997.11 - Step 6: Final answer
x = 318,812.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.